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1. WO2020109427 - EVENT DETECTION USING DAS FEATURES WITH MACHINE LEARNING

Publication Number WO/2020/109427
Publication Date 04.06.2020
International Application No. PCT/EP2019/082809
International Filing Date 27.11.2019
IPC
E21B 47/107 2012.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
47Survey of boreholes or wells
10Locating fluid leaks, intrusions or movements
107using acoustic means
E21B 41/00 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
41Equipment or details not covered by groups E21B15/-E21B40/95
E21B 47/135 2012.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
47Survey of boreholes or wells
12Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
13by electromagnetic energy, e.g. of radio frequency range
135using light waves, e.g. infrared or ultraviolet waves
CPC
E21B 2200/22
E21B 47/107
E21B 47/135
E21B 47/14
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
47Survey of boreholes or wells
12Means for transmitting measuring-signals ; or control signals; from the well to the surface ; or from the surface to the well; , e.g. for logging while drilling
14using acoustic waves
G01V 1/288
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
1Seismology; Seismic or acoustic prospecting or detecting
28Processing seismic data, e.g. analysis, for interpretation, for correction
288Event detection in seismic signals, e.g. microseismics
G01V 1/307
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
1Seismology; Seismic or acoustic prospecting or detecting
28Processing seismic data, e.g. analysis, for interpretation, for correction
30Analysis
307for determining seismic attributes, e.g. amplitude, instantaneous phase or frequency, reflection strength or polarity
Applicants
  • BP EXPLORATION OPERATING COMPANY LIMITED [GB]/[GB]
  • LYTT LIMITED [GB]/[GB]
Inventors
  • THIRUVENKATANATHAN, Pradyumna
Agents
  • FORD, Louise Diane
Priority Data
PCT/EP2018/08298529.11.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EVENT DETECTION USING DAS FEATURES WITH MACHINE LEARNING
(FR) DÉTECTION D'ÉVÉNEMENT À L'AIDE DE CARACTÉRISTIQUES DAS AVEC APPRENTISSAGE AUTOMATIQUE
Abstract
(EN)
A method of identifying events includes obtaining an acoustic signal from a sensor, determining one or more frequency domain features from the acoustic signal, providing the one or more frequency domain features as inputs to a plurality of event detection models, and determining the presence of one or more events using the plurality of event detection models. The one or more frequency domain features are obtained across a frequency range of the acoustic signal, and at least two of the plurality of event detection models are different.
(FR)
L'invention concerne un procédé d'identification d'événements consistant à obtenir un signal acoustique à partir d'un capteur, à déterminer au moins une caractéristique de domaine de fréquence à partir du signal acoustique, à fournir ladite caractéristique de domaine de fréquence en tant qu'entrée à une pluralité de modèles de détection d'événement, et à déterminer la présence d'au moins un événement à l'aide de la pluralité de modèles de détection d'événement. Ladite caractéristique de domaine de fréquence est obtenue sur une plage de fréquences du signal acoustique, et au moins deux parmi la pluralité de modèles de détection d'événement sont différents.
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